Door-bolt fixture



lg- 5 1929- L. A. BlTToRF 1,723,007

DOOR BOLT FIXTURE Filed June 16, 1927 Patented Aug. 6, 1929.

UNITED STATES PATENT OFFICE.

LOUIS A. BITTORF, OF STERLING, ILLINOIS, ASSIGNOR TO NATIONALMANUFACTURING COMPANY, OF STERLING, ILLINOIS, A CORPORATION OF ILLINOIS.

DOOR-BOLT FIXTURE.

g Application led .Tune 16,

Hy invention relates generally to fastening devices for swinging,folding and sliding doors such as are generally used for garages andsimilar buildings, and has to do particularly with a fixture forsupporting, operating and latching door bolts.

One of the objects of my invention is to provide self-acting means formoving the door bolt to its extended or door-fastening position and foraiding in its movement to withdrawn position.

Another object -is to provide means for holding the bolt in eitherextended or withdrawn position, such means being adapted to safeguardagainst theft by preventing unauthorized operation of the bolt.

Other objects are to provide a reversible and invertible bolt supportingand operating structure which is simple in construction, cheap tomanufacture and easy to operate; and the provision of means for holdingthe handle of the bolt in a definite position away from the door topermit the same to be readily grasped for operation.

Other objects and advantages will become apparent as this descriptionprogresses and by reference to the drawings wherein Figure 1 is aportion of a door shown in elevation and having my invention appliedthereto.

Fig. 2 is aii enlarged perspective view of my bolt fixture forsupporting, operating and latchiug the door bolt.

Fig. 3 is a front elevation of the structure shown in Fig. 2.

Fig. 4l is a side elevation of the structure of Fig. 2.

In the drawings, the door 1, which may be of a swinging type, is adaptedto be fastened in its closed position by the bolt 2 having theright-angled handle 3. This bolt is slidably supported by the bracket 4and the fixture 5, and its lower end, which may be slightly tapered, isadapted to cooperate with the socket 6 in the floor or sill in thewell-known manner. The bracket and fixture may be secured to the door inany desired manner as by the bolts or screws 7.

One of the important features of my iiivention is that, when the handle3 is released, the bolt 2 movesof its own accord by gravity to its doorlatching position as sliownin Fig. 1. To accomplish this, the Xture 5 isprovided with a back 8 which is secured to the door, as stated by thescrews 7, and a base 9 1927. Serial No. 199,157.

which is provided with an opening 10 to slidably receive and support thebolt 2. r1`he base 9 is extended integrally, or otherwise, to provide anupturned and outwardly curved and tiiangularly-shaped double-cam piecewhich presents the oppositely directed and spirallike cam surfaces 11and 12. rllhe back 8, at its opposite sides, is provided with similaroutwardly extending side plates or wings 13, each of which is providedwith a circular notch or depression 111 in its top to receive andposition the handle 3 when the bolt is in its withdrawn position. Thelower part of each of these side plates is undercut and notched as at 15to forni in a. sense spiral-like camways 16 and 17 through which thehandle 3 is rotatably guided, and also to provide a pocket in which thehandle is received and latched in the extended position of the bolt 2.Then the bolt is in its latched position as shown in Figs. 1 and a, theside plate 13 prevents vertical -movenient of the saine, and the notches15 prevent rotation of the bolt when the handle is moved verticallyagainst the side plate.

In use, assuming that the bolt 2 is in the uiilatched or dotted lineposition of Fig. 1, to mov-e the same to its door-fastening position,the handle 3 is lifted slightly to release it from the notch 14 androtated away from the door'to a position between the side plates 13 andthen dropped. The bolt, due to its weight, falls and the handle 3strikes the rounded peak 12 of the double-cam piece 12 and enters one orthe other of the camways 16 or 17. As the handle 3 enters the camway andcontinues to move downwardly, the spiral-like cam track rotates it intothe latchin@ pocket beneath the wing 13 as shown in Fig. 4.

Then the bolt 2 is to be legitimately re- In this position, the handleis lhitched against vertical movement, due to the CII leased orvwithdrawn to: permit opening of the door, thehandle is turnedforwardlyaway 'from the door and moved upwardly. During this movement, the camaction between the handle el the bolt and the cam surfacel 12 (or camsurface 11 as the case may be) assists in the lifting action in anobvious rmanner. When the bolt is moved to its fully withdrawn position,it is rotated to the dotted linepos-i.- tion ot Fig. 3 and engaeed innotch 14 in the topv oi". the side plate. 1-

- It will'V be noted. that ythe notches 2141 are-so loca ed 2 as; toAposi-tion .the handlef3` away. tlsoniw the doorto insn-rethatit mayalways-be readily `grasped 'tor operationwithout strik- E ingr the handagainstthe: door, which is very obi,eetionablev in many instancesbecause yol splinters and, rone'hsurfaces. f Furthermore, it maybedesirable to turn=thehandle 3 one wayor theother; in its withdrawnposition toz avoid interferencei in the yinovemento the doorl or torender theihandle more accessible,- and the two notched side plates 1.3readily A rovide foritlns.- Also this construct1onfenables thedoorboltfto be monnted'npon either-` the: right or left hand; door with thecoin venienees inoperationabove stated.

ldlhile I have sh own an di d eseribed my invention as app-liedtoafboltstructure which is mounted at the-bettoniot thefdoor and adapt-ved to v enejagefa,socketdnthe licor sill, it is to be under-stood that Ido not'idesue to be hin-itedto such mounting and that it may also bemounted.atlthe topof the-door and; adapted to engage a socket in anoverhead beam or. sill. In that even t, theI operation of my inventionis obvious, the noteh.- 15 serving 'to latch the handle in thedoei:lasteningfposition et the bolt while the cam assists in movementfrom this position whentheh andleis rotated. out` Wardly away from'thedoor. More par-tion? larlyyfthe boltfwvill be `wvithdrfmvn,from-itsoverhead socket andthe door unlatched at that point by slightly .liftingand rotating. the handle 3., alongN thespiral-:lfike cam track.` -Insuch inverted.vinounting, the stop. 18 on the bolt will` serve tolim-i-t.t.he downward-movement of the samewhenthe handle is rotated;

and. released as described.

AlthoughI have described but one enr-1 bodimentf ot my invention, itwill be under,- stoodthat I do net fdesire to belimitedftofsuchconstruction because it isobvious th at: various ch angesandimoditieations may be made therein without departing' from the spiritand scopeof myinvention'as defined by the claims whiclrfollow.'A

I claim:

1. In combinati-on, a. doonbolt havingl arighteangled handle, and labracket-for sup-` ponting,y operatingl .and .latching said.. bolt,- said.bracket-,having abase slidably receivingsaid.v bolt,l spacedv side.members projectingr outwardly fronrthe.E door above said.A base andhaving l notches 1n their upper` andy lower saidbase andhaving anothernotchiirits une derside to receive and; preventv rotarymovement of saidboltwandhandle in their extended and door fastening; positions,,andajcain i'or rotating,l said handle beneath said'. side plate and: intooperative relation with the notclron theunderside of said plate whenbolt is released andndioppedzfrom its withdrawn position.

8. Incombination, a1 door bolt.l having; yan

angled handle, and a braclnetr havin a1 part adapteditorotatably andslidably necelve said` bolt', anember adapted to support said. handle ina predeterminedpositioniwhenthe bolt is withdrawinvsaid: member being'spacedv :from said part to `form :aA pocket therebetween, .and

spiral-like @camtraclr,leadinor to said: Boeket;

for rotating' said handle land :bolt to throw said handle into said;poclretrwhenit is re,

leased an d dropped from its withdrawnposition.v

4f. In an invertible door.v bolt structure, a boltzhaving.y alateralaprojection, va bracket for rotatablyl and reciprocably;.carrying said bolt, said bracket-.having al member: projectlng`outwardly from the door andhavlng notches 1nV its top and, bottomedges, an outwardly extending and curved cam spacedV from said: memberandi providing: a; cam-way leading to one of saidanotehesrfor .rotatingsaid bolt and for moving -saidyprojeetionrto and Strom engagementwithfthatl notch:

5. A door bolt fixture for eoIitr-'olling` the movement of the doorvbolt; comprising apart connected to the door, a horizontal basepart.

having an opening. to slidably and rotatably receiver thel bolt, `said;members projecting` outwardly fromzs-a-id first partgand-above andspaced troia-said` baselpart,` notohesnin thev tops et saidf sidemembersto receiveiafpartof the bolt in., its :extended positiomwnotchesiin the lower parts of said Side members,4r con:- nected cam' tracksor'guiding'said handle partrbetween'either ofd saidside membersandsaidzbase. .part-,- sa-id; side members and notches and base partformingretaining 4pockets which z receive 1 and prevent' movement ofsaid bolt .vertically upwardzand: to its Withdrawn position.

6. A, door bolt l fixture; for; supportingirand controlling movement. ofthe boltieomprising a part connected; to the doorga-base orslidably androtatablyfreceiving the bolt-,side

members projecting outwardly from said part above said base, and anupturned and out wardly projecting double cam piece extending ulnvardlyirom said base to a point between said side members to torni joinedspiral-like cam ways between said piece and side members, thearrangement being such that the door bolt is automatically positionedbeneath one of said side members merely by releasing it and dropping itfrom its withdrawn position.

7. In combination, a door bolt having a projecting part, a memberadapted to receive said part in the withdrawn position of said bolt, apocket for receiving' said part in the extended position of the bolt,and self-acting means including a cam-way for moving said part entirelyinto said pocket when said part is released from said member, saidpocket being at the end of said camway and so shaped that said part isprevented from movement backward through said camway when it is movedvertically.

8. In combination, a door bolt having a handle, a member having a notchin its upper part to receive and position said handle in the withdrawnposition of the bolt, a pocket in the lower part of said member igorreceiv ing said handle when the bolt is extended, and means including aspiral cam for automatically moving said handle into said pocket when itis removed from said notch away from said member and dropped, saidpocket being so shaped that the handle cannot be moved therefrom byvertical movement of such handle.

9.A In combination, a door bolt having a handle, a member carried by thedoor and having notches in its top and bottom for receiving said bolthandle, said top notch being located to posit-ion the handle parallelwith but spaced from the door in the with drawn position of the bolt andsaid bottom notch being located directly beneath the top notch to latchsaid handle in its extended position against upward and rotarymovements.

10. In combination, a door bolt having a handle, a flat member carriedby and extending outwardly from the door and having notches in its topand bottoni for receiving and latching said bolt handle parallel t-o thedoor, said top notch being located to space the handle away from thedoor in the withdrawn position of the bolt and said bottom notch beinglocated beneath the top notch to latch said handle in its extendedposition against upward and rotary movements, and means forautomatically moving said handle beneath said member and intocooperative relaa'ion with the bottom notch when the handle is moved outof engagement with said top notch and dropped.

Il. In combination, a door bolt having a handle, and a bracket forsupporting the same having a pocket, and means for moving the handleinto said pocket when it is released and the bolt is dropped from itswithdrawn position, the walls of said pocket being adapted to so embracesaid handle upon upward vertical movement of the same that rotary andunlatching movement of the same is prevented.

l2. A door bolt fixture including means for securing it to the door,means for slidably and rotatably supporting the bolt, and atriangularly-shaped cam piece having opposed and meeting spiral-like camsurfaces which are adapted to receive and support and guide the bolt inits movement toward and from its door fastening position.

In testimony whereof, I have subscribed my name.

LOUIS A. BITTORF.

